Research conducted by Perplexity AI using the following sources:

• Willis outlines 'worst-case scenario' for NZ if Middle East war drags on
• 'No need to panic', fuel supplier says | RNZ News
• Fuel crisis: Potential restrictions as supply concern grows - 1News
• Fuel supply emergency level system: How New Zealand's response ...
• Live: Nicola Willis gives update amid Iran fuel, economic concerns